public async void LoadCharactersAsync()
        {
            ObservableCollection <JoinCharacter> characters = await PersistencyService.LoadCharacters();

            foreach (var character in characters)
            {
                switch (character.Faction.ToLower())
                {
                case "alliance":
                    CharactersAlliance.Add(character);
                    break;

                case "horde":
                    CharactersHorde.Add(character);
                    break;
                }
                Characters.Add(character);
            }
        }